A3980KLP-T

Overview

The A3980KLP-T is a bipolar stepper motor driver from Allegro Microsystems, designed for surface-mount applications in a 28-pin TSSOP package with an exposed pad. It integrates control logic and power stages to drive bipolar stepper motors. The device operates on a supply voltage range of 3V to 5.5V and supports load voltages from 7V to 50V. It features DMOS technology with a maximum output current of 1A per channel. The component offers multiple microstepping resolutions including full, half, eighth, and sixteenth step modes. It is rated for an operating junction temperature range of -40°C to 150°C and holds AEC-Q100 automotive qualification.

Feature Summary

• Integrates full control logic and power output stages for simplified system design
• Supports variable microstepping resolutions for smooth motor operation
• Includes internal blanking circuitry to handle high di/dt switching events
• Features thermal shutdown protection to prevent damage during overload conditions

Applications

• Automotive HVAC fan control systems
• Industrial automation actuators
• Office equipment such as printers and scanners

Procurement Notes

Verify the specific suffix configuration against the manufacturer's latest datasheet to ensure compatibility with required packaging and environmental standards. Confirm that the component meets all necessary regulatory compliance requirements for the target application environment before finalizing procurement decisions.

Selection Notes

Select this component when a fully integrated bipolar stepper driver with automotive reliability is required. Ensure the load voltage does not exceed 50V and the continuous current demand remains within the 1A limit per phase. Consider the thermal performance of the TSSOP-EP package for heat dissipation in enclosed spaces.

Part Context

This part belongs to the A3980 family of stepper motor drivers known for their robustness in automotive environments. It serves as a direct replacement for older discrete solutions or other integrated drivers requiring similar pinouts and electrical characteristics. The family is widely used in applications demanding precise motion control with minimal external components.

Replacement Considerations

The A3980KLPTR-T is listed as a parameter-equivalent alternative. Verify pinout compatibility and electrical specifications before substitution.